Advice 1: How to configure the firewall

The firewall screen is a special program that is preinstalled on a personal computer and performs the functions of protection from unauthorized access to its resources. This program is also called a Firewall, the firewall or just the firewall. Configuring firewall screenand required for the correct operation of the various programs.
How to configure the firewall
Go to the main menu start the Windows operating system. Select "control Panel" and go to "Windows Firewall". You can also start the configuration from the command line by typing the following text: “control.exe /name Microsoft.WindowsFirewall”.
Check out the opened window. On the left there is a panel consisting of several sections, which are responsible for various settings firewall screen. Go to the tab "public profile" and "Private profile", where near the word "Outbound" you must cancel the option "Block". Click "Apply" and "OK", then close the window. After that you can start to configure the Internet access, various services and programs that are installed on your personal computer.
Go to the tab "advanced settings" to launch the firewall screen in the enhanced security mode. The window consists of a toolbar and three sections. Click in the left field section "outbound Rules", then on the right box select "Create rule". This will open the rule wizard.
Select the rule type you want to add in the firewall settings screen. You can select for all other connections to the computer or set up a specific program, putting her way. Click "Next" to go to the "Program", which again specify the path to the application.
Go to "Action". Here you can allow the connection or block it. You can also become a secure connection, which will be authenticated by IPSec. In this case, clicking the "Configure" button, you can set your own rules. Then, specify "Profile" for your rules and come up with a name. Click "finish" to save the settings.

Advice 2: How to eliminate screen flicker

The degree of flicker on the screen depends on the settings for the refresh of the image on the monitor. The concept of "refresh rate" applicable to tube monitors, LCD monitors, these settings are not important. The screen of most video monitors is updated once per minute. If you do not fit these settings, eliminate flickering of the screen, by following these instructions.
How to eliminate screen flicker
Call the component "Screen". To do this through the "start menu" open "control Panel". In the category "appearance and themes" click the "Screen" with the left mouse button or select any of the available tasks in the top of the window. If "control Panel" on your computer is in classic view, click the icon immediately.
There is another way: click the right mouse button at any free from files and folders part of the "Desktop". In the drop-down menu, select "Properties", clicking on it with the left mouse button. Opens a new dialog box "display Properties".
In the opened window, go to "Settings" and click on the "Advanced" button located at the bottom of the window. This action will cause an additional dialog box "Properties: plug and play monitor [your graphics card]".
In the new window click the tab "Monitor" and set the marker in the box next to "Hide modes which the monitor cannot use". This will help you to avoid possible problems: if the refresh rate of the screen are set incorrectly, the image on the monitor may be unstable. Also wrong frequency can cause malfunction of the equipment.
Using the drop-down list under "display Settings" set the field "Frequency of update of the screen" with the desired value. The higher the refresh rate of the screen, the less the monitor flickers. The default frequency of 100 Hz, although your monitor may support a different frequency. Specify this information in the documentation or on the manufacturer's website.
After making necessary changes click on "Apply" in the properties window of the monitor. To confirm the new settings respond in the affirmative. Click on the OK button. You will remain single window "display Properties". Close it using the OK button or icon [x] in the upper right corner of the window.
If you change the refresh rate of the screen will change the look of the desktop, set the window properties of the screen easy to read the resolution, click on the "Apply" button and close the window. The size of the workspace on the screen adjust with the adjustment buttons on the monitor. Don't forget at the end click on the "Degauss" (Degauss).

Advice 3: Why is shaking the screen

Sometimes sitting at the computer, you notice that the image on the screen is shaking, a kind of "floats" or starts suddenly shakings. This problem is widespread. But the reasons for it are different. It is necessary to understand with why the screen is shaking.
Why is shaking the screen

The most common cause of shaking screen is the presence in the operating room or apartment of a source of alternating electromagnetic fields. This can be verified very easily by using the movement monitor. If the shaking stops, then the problem is associated with electromagnetic fields. Their sources are various electrical installations, transformer substations, and transmission lines. At home, replace them with TV, refrigerator, microwave, and other appliances.

The second most frequent cause of shaking screen - lack of power supply. As a rule, the monitor can be connected to the pilot which, in addition to him, another "feed" the system unit, modem, TV, chandelier, and much more, depending on the user's taste. Worth a try to disable some of these devices and see decreased whether the shaking image on the monitor. If not, then perhaps the problem is in the pilot, how it filters the electricity. You can just try to change it.

Less often (though most often coming to mind) the reason for the shaking image may be a fault inside the monitor, for example, a broken scanner in the monitor or a problem with the system its power. In such cases it is inexperienced users to climb inside the monitor. The best solution in this situation would be to appeal to qualified specialists.

Sometimes the cause of the above problems could be the low refresh rate of the screen. By default, some monitors frequency exhibited in the region of 60 Hz. This not only makes visible trembling of the screen, but also extremely harmful to the eye. Therefore it is necessary through "control Panel" find the menu item "Display" and set there the frequency of 75 Hz. When the frequency jitter of the screen can go completely.

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